first commit

hrmsEjb/jxl/biff/formula/Subtract.java

@@ -0,0 +1,15 @@
+package jxl.biff.formula;
+
+class Subtract extends BinaryOperator implements ParsedThing {
+  public String getSymbol() {
+    return "-";
+  }
+  
+  Token getToken() {
+    return Token.SUBTRACT;
+  }
+  
+  int getPrecedence() {
+    return 4;
+  }
+}